Loans and Allowance for Loan Losses (Details 9) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Aging analysis of the recorded investment of past due loans
Total Past Due	$ 1,185	$ 4,361
Current	486,305	415,407
Total ending loan balance	487,490	419,768
Recorded Investment >90 Days and Accruing	0	0
30-59 Days Past Due
Aging analysis of the recorded investment of past due loans
Total Past Due	428	1,637
60-89 Days Past Due
Aging analysis of the recorded investment of past due loans
Total Past Due	123	138
90 Days Or Greater
Aging analysis of the recorded investment of past due loans
Total Past Due	634	2,586
Commercial
Aging analysis of the recorded investment of past due loans
Total Past Due		377
Current	113,341	95,904
Total ending loan balance	113,341	96,281
Recorded Investment >90 Days and Accruing	0	0
Commercial \| 30-59 Days Past Due
Aging analysis of the recorded investment of past due loans
Total Past Due		377
Commercial real estate
Aging analysis of the recorded investment of past due loans
Total Past Due	575	2,619
Current	282,560	236,073
Total ending loan balance	283,135	238,692
Recorded Investment >90 Days and Accruing	0	0
Commercial real estate \| 30-59 Days Past Due
Aging analysis of the recorded investment of past due loans
Total Past Due	173	1,189
Commercial real estate \| 60-89 Days Past Due
Aging analysis of the recorded investment of past due loans
Total Past Due	12	83
Commercial real estate \| 90 Days Or Greater
Aging analysis of the recorded investment of past due loans
Total Past Due	390	1,347
Residential real estate
Aging analysis of the recorded investment of past due loans
Total Past Due	485	1,251
Current	61,586	55,757
Total ending loan balance	62,071	57,008
Recorded Investment >90 Days and Accruing	0	0
Residential real estate \| 30-59 Days Past Due
Aging analysis of the recorded investment of past due loans
Total Past Due	240	58
Residential real estate \| 60-89 Days Past Due
Aging analysis of the recorded investment of past due loans
Total Past Due	29	9
Residential real estate \| 90 Days Or Greater
Aging analysis of the recorded investment of past due loans
Total Past Due	216	1,184
Consumer \| Home equity
Aging analysis of the recorded investment of past due loans
Total Past Due	110	101
Current	25,908	24,960
Total ending loan balance	26,018	25,061
Recorded Investment >90 Days and Accruing	0	0
Consumer \| Home equity \| 60-89 Days Past Due
Aging analysis of the recorded investment of past due loans
Total Past Due	82	46
Consumer \| Home equity \| 90 Days Or Greater
Aging analysis of the recorded investment of past due loans
Total Past Due	28	55
Consumer \| Other
Aging analysis of the recorded investment of past due loans
Total Past Due	15	13
Current	2,910	2,713
Total ending loan balance	2,925	2,726
Recorded Investment >90 Days and Accruing	0	0
Consumer \| Other \| 30-59 Days Past Due
Aging analysis of the recorded investment of past due loans
Total Past Due	$ 15	$ 13

Financing receivable recorded investment past due loans.

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- Definition

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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- Definition

Financing receivables that are current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524

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Recorded Investment in financing receivables that are past due at the balance sheet date.

+ References

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524

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